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Methods of Testing and Assessment review sheet

Methods of Testing and Assessment review sheet - Methods of...

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Methods of Testing and Assessment review sheet Aptitude How do aptitude tests differ from achievement tests? Aptitude tests measure ability wile achievement tests measure learned knowledge in one area. How does the Differential Aptitude Test Assess aptitude? It uses 8 subscales similar to those of the Wechsler series intelligence tests. Verbal reasoning, numerical reasoning, abstract reasoning, perceptual speed and accuracy, mechanical reasoning, space relations, spelling, language use. What are the psychometric properties of the SAT? Why is the SAT such a “good test”? Reliability. alpha = .91 - .93, test-retest = .87 - .89, Scm = 30 – 35. Validity. Predicitive validity of freshman GPS = .42. it is a good test because when used in conjunction with hs gpa the predictive validity of the test is actually pretty good. Over .51. How do Computerized Adaptive Tests (CAT) work? What are some strategies to help you improve your score? It adapts to your answers. If you answer wrong then it gives you an easier question and if you answer correct then it gives you a harder question. What are the different sections of the current GRE? Writing, verbal and math. Factor Analysis What is the Difference btw EFA and CFA? When should you use one over the other? EFA = Exploratory Factory Analysis (this is if you have no clue about any factors) CFA = Confirmatory factor analysis (this is for If you know some underlying factors) How do you label factors? It is totally subjective. What is a correlation matrix? When is it useful? A complete table of intercorrelations among all the variables in a test. It is the beginning point of a factor analysis, the first step. It is helpful in manually finding correlations btw variables or if their r a small number of variables. What is a Factor Matrix? A table of correlations called factor loadings. Factor loadings indicate the weighting of each variable on each factor.
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What is factor rotation and when is it used? Because in a factor matrix the reference axes are arbitrary, they can be rotated in order to make the graph easier to read and more understandable. For instance, if the factor loadings are negative, which doesn’t really make sense, and then they can be rotate on the factor matrix to have them become positive. The negative values don’t make sense because they imply that a high score on a factor are correlated with low test scores. Why Might you use Factor Analysis? It is mainly used to summarize the interrelationships among a large number of variables. Also it can be used to clarify what factors are in a test and find factors that might be hidden. Neuropsychological Testing What are the major regions of the brain and their associated functions? Under what circumstances might you recommend a neuropsychological examination?
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Methods of Testing and Assessment review sheet - Methods of...

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